You must call S&W and ask.
Yes
Depends on how old the revolver is.
What's age is legal for do bodyguard job
You need to contact S&W for a correct answer.
No. It's not rated for +P ammo. The 649 is, though.
You will have to shoot both to find out.
500 s&w
The ammunition is called .357 Sig. Most pistols in .357 Sig can shoot the .40 S&W when you drop in a .40 S&W barrel.
If you call S&W, they will tell you when it left the factory.
depends on if its a s & w or a s 7 w long
Yes